https://languagelog.ldc.upenn.edu/nll/?p=50886 https://languagelog.ldc.upenn.edu/nll/?p=50886 Merriam Webster has changed the definition of "Vaccine" to avoid

https://languagelog.ldc.upenn.edu/nll/?p=50886 https://languagelog.ldc.upenn.edu/nll/?p=50886 Merriam Webster has changed the definition of "Vaccine" to avoid the distinction you have raised.